Boot or shoe sewing machine.



PIA'IENTED JUNE 23, 1903.

I. DOUGET.

BOOT 0R SHOE SEWING MACHINE.

APPLICATION FILED D30. 19, 1902.

6 SHEETS-SHEET 1.

N0 MODEL.

m: uonms PETERS w, vuotou'rnu. WASHINGTON, n, c;

PATENTBD JUNE 23, 1903.

F. DOUGBT. BOOT 0R SHOE SEWING MACHINE.

APPLICATION FILED DBO. 19, 1902.

6 SHEETS-SHEET 2.

N0 MODEL.

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by: NORRIS PETERS cu, mom-\Jmafwasnmamn, 0. c4

PATBNTED JUNE 23, 1903.

F. DOUCET.

BOOT 0R SHOE. SEWING MACHINE.

APPLIOATION FILED DBO. 19 1902.

6 SHEETSSHEET 3.

no MODEL.

I itliesse 8:

1m: Nouns PzTERs cor. vacuum-1o. WASNINGTON, o c.

No, 731,761. V PATENTED JUNE 23, 1903.

F. DOUGET.

BOOT OR SHOE SEWING MACHINE. APPLICATION FILED DBO. 19, 1902.

6 SHEETS-SHBET 4.

N0 MODEL.

Invenbor with/eases:

mi: Norms wz'r'zas m, woroumuq WASMINGTON. n, c.

No. 731,761. PATENTED JUNE 23, 1903.

F. DOUGET.

BOOT 0R SHOE SEWING MACHINE.

APPLIOATION FILED D110. 19, 1902.

NO MODEL. 6 SHEETS-SHEET 5 Ylf-Zizwsses: 1;; vewiol':

1 cams PETERS on, mom nmo. wAsumcYon p c PATENTED JUNE 23, 1903.

F. venom. BOOT'OR SHOE SEWING MACHINE.

APPLIUATION FILED D110. 19, 1902.

i 3 are views similar to Fig. 1, showing certain U ITED STATES Patented June 23, 1903.

PATENT OFFIC FELIX DOUCET, OF MELROSE, MASSACHUSETTS.

BOOT OR SHOESEWING MACHINE.

SPECIFICATION forming part of Letters Patent No. 731,761, dated June 23, 1903.

Application filed December 19, 1902. S ial N 135,900. (No model.) i

To all whom it may concern:

Be it known that I, FE IX DOUOET, of Mel-' rose, in the county of Middlesex and State of Massachusetts, have: invented certain new and useful Improvements in Boot or Shoe Sewing Machines, of which the following is a specification. p

This invention relates to a boot and shoe sewing machine havinga rotary horn adapted to beinserted in the interior of a boot or shoe upper and form stitches, uniting the outer sole, the upper, and the innersole.

The invention has for its object to enable a inachineof this character to form a double- Of the accompanying drawings, forming a. part of this specification, Figure 1 represents a vertical sectional view of a sewin g-machine horn embodying my invention. Figs. 2 and of the movable parts in diiferent positions.

as indicated in Fig. 8.

Fig. 4 represents an enlarged view similarto a portion of Fig. 2 and showing in addition a shuttle locatedabove the horn and supporting and operating mechanism therefor. Fig. 5 is a view including the parts shown in Fig. 4, the mechanism within the horn being section on line 6 6 of Fig. 5. Fig. 7 represents a perspective view showing portions of the needle, loop-spreader, and shuttle, together with portions of the needle-loop. Fig. 8 represents a top view of a portion of the horn, partly broken away. Fig. 9 represents aperspective view showing parts of the mech- Fig. 10 represents a section on line 10 10 of Fig. 5. Fig. 11 represents a section online 11 11 of Fig. 5. Figs. 12, 13, and 14 are perspective views of details hereinafter referred to.

The same letters of reference indicate the same parts in all of the figures.

a. represents a shoe-sewing-machine horn which is providedin its upper extremity with the usual rotary whirl b and is adapted to berotated on a vertical axis which coincides I with the center of the whirl. Mechanism is .the needle.

Fig. 6 represents a provided for rotating the whirl, the onlyportions of said mechanism here shown being the gear 0, meshing with the toothed periphery of the whirl, and the bevel-gears d 6, one aifixed to the gear 0 and the other to the shaftf, the latter extending downwardly and being connected with other parts of the whirl rotating mechanism.

9 represents the hooked or barbed needle, which is straight and is reciprocated in a path coinciding with the axis of the horn, the barb of the needle passing through the whirl.

Above the horn is a suitable shuttle h, which cooperates with the needle in forming a lock-stitch, the shuttle here shown being circular and provided with thread-hooks h h on its periphery, as shown in Letters Patent of the United States No. 507,530, dated October 31, 1893. The said shuttle may be supported and operated by the means shown in said pateutthat is to say, an arm 11, having antifriction -rollers supporting the shuttle, and an oscillating gear-segment j, engaged with gear-teeth formed on the periphery of the shuttle, said segment imparting a backand-forth rotary movement to the shuttle. An idle gear is, journaled on a fixed support, engages the teeth of the shuttle, the arm i, segmentj, and gear holding the shuttle in its proper position relatively to the path of The means for oscillating the gear-segment j and for supporting the gear 70 may he the same as shown in the abovementioned patent.

I do not show the needleoperating mechanism, the meansfor supporting the horn, nor the mechanism for imparting motion to the whirl-rotating shaft f, these parts being so well known as to require no illustration.

In carrying out my invention I adapt to the interior of the born the following instrumentalities-viz., first, a reciprocating takeup m, adapted to give out the needle-thread to the needle and shuttle and to take up the thread and set the stitch; secondly, a reciprocating thread-retainer it, adapted to store up a portion of the needle-thread between the stitch last set and whirl before the ascent of the needle and to give outthe thread thus stored up during the ascent of theneedle for the purpose of preventing the thread from reeving or slipping in the barb of theneedle and thus becoming chafed or frayed, and,

thirdly, mechanism common to said take-up and thread-retainer for operating said parts. The take-up m isa roll or pulley mounted on a slide m, which is movable endwise between suitable guides in the horn. The needlethread 0 passes, as here shown, from the source of supply through awax-pot(if waxed thread is used) around a tension-wheel 0, over suitable guide-pulleys within the horn to the take-up m, and from the latter to and through the whirl. The take-up'is reciprocated by suitable mechanism, which in this embodiment of my invention comprises a lever m pivoted at m to the base portion of the horn, a link on, connecting the swinging end of the lever with the slide m, and a rod m connected with the lever and with mechanism (not shown) for reciprocating the rod, oscillating the lever, and reciprocating the slide m and take-up m. I

The thread-retainer n is an elongated slender arm having a hookn, Fig. 8, at its outer end and movable endwise in a path which is close to the upper wall of the horn, the hook being movable from a thread-delivering position over the whirl, as shown in Figs. 1 and 5, to a thread-storing position at one side of the whirl, as shown in Figs. 2 and 4.

The thread-retainer is aflixed to a slide 01 which is movable endwise in a path parallel with the pathof the take-up slide. Mechanism is provided whereby each forward or outward movement of the take-up slide toward the tip of the horn for the purpose of giving our. thread while the needle is rising causes two movements of the thread-retainer. The first of these movements is from the threadreleasing position, Fig. 5, to the thread-storing position, Fig. 4, and occurs during the first part of the forward movement of the take-up slide. The second movement is from the thread-storing position back to the threadreleasing position and occurs during the latter part of the forward movement of the takeup slide. The said mechanism includes a rack 19, formed on or affixed to the threadretainer slide, a slide p, parallel with the th read-retainer slide and hereinafter referred to as the operating-slide,a rack 19*, formed on or affixed to the operating-slide p, and a pinion 29 located between the slides n and p and meshing with the said racks, the pinion being ;journaled on a stud affixed to the horn, so that when one of the racks is moved endwise in one direction the other rack necessarily moves endwise in the opposite direction. Each of the slides n and 19 is provided with a latch r, said latches normally projecting yieldingly above the slides through slots therein. Each latch is preferably an ear or flange formed on a spring 1" and having in its upper edge a recess r Beside each latch and affixed to the same spring is a latch-depressing flange r One of said flanges cooperates with the fixed ear 3 and the other with a fixed ear 3, as herein after described. To the take-up slide are affixed two spring-dogs zit, arranged at opposite sides of the slide. The dog-t is arranged to engage the latch on the thread-retainer slide, while the other dogt is arranged to engage the latch on the operating-slide p, the dogs riding up the inclined upper edges of the latches and engaging the recesses r therein. When either dog is engaged with the correspondinglatch by a movement of the take-up slide, the latch and the slide to which it is attached are moved in the same direction, and the opposite slide is moved through the pinion p in the opposite direction. These movements continue until the latch-depressing flange r of the engaged latch encounters the corresponding fixed ear 8 or s, the depressing-flange moving under the ear and being depressed thereby with the latch, which is thus disengaged from the dog, whereupon the slides n and 1) stop.

The parts of the above-described threadretainer operating mechanism are relatively arranged so that when the take-up slide commences its outward movement the dog i is in engagement with the latch of the operatingslide 19', the latch of the thread-retainer slide 72 being then at a considerable distance from the dog i, all as shown in Fig. 1. The first part of the outward movement of the take-up slide therefore causes a movement of the operating-slide p in the same direction and an inward movement of the thread-retainer slide and the thread-retainer attached thereto, as shown in Figs. 2 and 4. This movement carries the thread-retainer inwardly to its threadstoring position and causes its hook to draw out a bight 0 Fig. 4, of the needle-thread between the whirl and the top of the horn. The inward movement of the thread-retainer slide carries the latch on said slide toward the dog i and causes the engagement of said latch and dog just after the latch on the operating-slide 1) has been depressed by the" corresponding fixed plate 3', all as shown in Fig. 4. The engagement of the dog if and the latch on the thread-retainer slide causes the latter to move outwardly with the takeup slide until the thread-retainer reaches its thread releasing position, said latch being then depressed by the movement of the accompanyingdepressing-flange under the fixed plate .9. The thread-retainer slide therefore stops, and with it the operating-slidep,whioh has now been moved inwardly by the outward movement of the thread-retainer slide, thus bringing its latch in position to engage the dog If when the take-up slide next reaches the inward extreme of its movement.

The operation is as follows: The needle descends until its hook passes through and below the whirl, and the whirl then moves to throw a bight of thread into the barb of the needle. The needle now commences to rise,

engaging the thread and drawing it up to form the needle-loop. The take-up slide commences to move forward when the needle commences to rise, and thus releases thread IIO I beyond the highest part of the shuttle, and is LII ready to be taken up, the takeup slide be in g then moved backward and the take-up m thus caused to take up the needle-loop and setthe stitch. When the take-up slide commencesits forward movement, its dog if is engaged with the latch of theoperating-slide 19, so that the thread-retainer first moves .backwardly far enough to form the bight Before the take-up slide reaches the outward extreme ofits movement the movement of the slides 13 n is stopped and then reversed, as above described, to give the thread -retainer its forward or thread-releasing movement, this causing the release of sufficient thread above the barb of the needle to prevent the thread from slipping or reeving in the barb. The extent of the forwardmovement of the thread-retainer is determined by the adjustment of the plates 3 s, which depress the latches on the respective slides, said plates being adjustably secured by screws passing through slots in the plates, as shown.

The thread-retainer reaches the extreme of its forward movement before the take-up ceases to deliver thread to the needle and shuttle. p v

The machine is provided with a suitable loop-spreader to, which cooperates with the needle in holding the loop open to permit the hooks of the shuttle to enter and engage the loop. The partial rotary movements of the shuttle cause the hooks to carry the needleloop over the top of the shuttle and release it at the back side of the shuttle, the take-up then acting to set the stitch.

It will be seen that my invention provides for the location in a sewing-machine horn of a take-up and a thread-retainer, thus enabling a horn-machine to form a lock-stitch without the liability of the chafing or reevingof the thread in the barb of the needle.

My invention is not limited to the details of mechanism here shown, and the same may be variously modified without departing from the spirit of the invention.

top of the horn and in the center of the Whirl,

receiving orifice therein and from said eccentricorifice through the orifice w in the plate 10. The said plate not only holds the whirl in place, but also keeps the needle thread above the whirl in a central position to insure its engagement by the hook at of the thread-retainer. The under side of the plate w is recessed to permit the thread to pass freely between it and the top of the whirl.

w represents a fixed plate, whichis located inthe top of the horn and hasan orifice w, which coincides with the needle-orifices in the I claim- 1. A sewing-machine horn having a whirlseat, a whirl, means for holding said whirl in place, a thread-retainer having itsfree end movable in a plane above the whirl, and mechanism for reciprocating said thread-retainer longitudinally of the born, a space being provided for the thread -retainer between the whirl-holding means and the top of the horn.

2. A sewing-machine horn having a whirlseat, a whirl, means for holding said whirl in place, a take-up, a thread-retainer having its free end movable in a plane above the whirl, and mechanism common to said take-up and thread-retainer for reciprocating them longitudinally of the horn, a space being provided for the thread-retainer between the whirlholding means and the top of the born.

3. A sewing-machine horn provided internally with a take-up, mechanism for reciprocating the same, a longitudinally-movable thread-retainer, and intermediate mechanism having provisions for imparting successive movements in opposite directions to the thread-retainer.

4. A sewing-machine horn provided internally with a take-up slide, mechanism for reciprocating the same,a thread-retainer slide, an operating-slide, means for causing movement of either the retainer-slide or the operating-slide to impart an opposite movement to the other, means for engaging said slides successively with, and for successively disengaging them from, the take-up slide.

5. A sewing-machine horn providedinternally with a take-up slide, mechanism for reciprocating the same, dogs carried by said slide, a thread-retainer slide and an operating-slide, each provided with a rack, a pinion engaging said racks, latches on said thread- 'retainer slide and operating-slide, adapted to engage said dogs, and means for successively disengaging the latches from the dogs.

6. A sewing-machine horn provided internally with a take-up slide, mechanism for reciprocating the same, dogs carried by said slide, a thread-retainer slide and an operating-slide, each provided with a rack, a pinion engaging said racks, latches on said threadretainer slide and operating-slide adapted to engage said dogs, latchdepressing flanges connected with said latches, and fixed plates adapted to act successively onsaid flanges. 7. A sewing-machine horn having a worksupport and containing a whirl, afixed plate above the whirl having a thread-guiding orifice located in the path of the needle, a space being formed between said plate and worksupport, and a reciprocating thread-retainer movable in said space.

In testimony whereof I have affixed my signature in presence of twowitnesses.

FELIX DOUOET. Witnesses:

O. F. BROWN,

E. BATCHELDER.

IIO 

